// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MAC_H_
#define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MAC_H_

#include <map>
#include <utility>
#include <vector>

#include "base/macros.h"
#include "content/browser/accessibility/browser_accessibility.h"
#include "content/common/content_export.h"

@class BrowserAccessibilityCocoa;

namespace content {

#if __OBJC__
CONTENT_EXPORT const BrowserAccessibilityCocoa* ToBrowserAccessibilityCocoa(
    const BrowserAccessibility* obj);
CONTENT_EXPORT BrowserAccessibilityCocoa* ToBrowserAccessibilityCocoa(
    BrowserAccessibility* obj);
#endif

class BrowserAccessibilityMac : public BrowserAccessibility {
public:
    // BrowserAccessibility overrides.
    void NativeReleaseReference() override;
    bool IsNative() const override;
    void OnDataChanged() override;

    // The BrowserAccessibilityCocoa associated with us.
    BrowserAccessibilityCocoa* native_view() const
    {
        return browser_accessibility_cocoa_;
    }

    // Detach the BrowserAccessibilityCocoa object and then recreate it.
    // This is only used to work around VoiceOver bugs by forcing VoiceOver
    // to rebuild its internal state.
    void RecreateNativeObject();

private:
    // This gives BrowserAccessibility::Create access to the class constructor.
    friend class BrowserAccessibility;

    BrowserAccessibilityMac();

    // Allows access to the BrowserAccessibilityCocoa which wraps this.
    // BrowserAccessibility.
    // We own this object until our manager calls ReleaseReference;
    // thereafter, the cocoa object owns us.
    BrowserAccessibilityCocoa* browser_accessibility_cocoa_;
    DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityMac);
};

} // namespace content

#endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MAC_H_
